Optical structure for preventing focusing of sunlight based on an in-mold injection process
The integrated lamp baffle is formed by in-mold injection molding. The problem of sunlight focusing is solved by using a slanted conical ring and a light-blocking ring structure, which reduces costs, simplifies assembly, improves appearance quality, and avoids damage to high heat-resistant materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DALIAN OUTFITTING SICHUAN IND ASSEMBLY TECH CO LTD
- Filing Date
- 2025-09-22
- Publication Date
- 2026-07-21
AI Technical Summary
In the era of LED and laser headlights, traditional car lights still pose a risk of sunburn due to focused sunlight. Existing solutions increase raw material costs, assembly difficulty, and differences in appearance quality, while high heat-resistant materials are prone to oxidation and damage.
The in-mold injection molding process is used to fix the stamped parts and the injection molded parts together. By using the inclined cone ring and light-blocking ring structure, an integrated lamp baffle is formed through in-mold injection molding. The metal stamped parts block the sunlight from focusing, and the inclined design of the inclined cone ring limits the position of the sunlight focusing.
This reduces the number of parts and assembly difficulty, ensures consistent appearance, avoids damage to high-heat-resistant materials, reduces production and maintenance costs, and ensures normal operation of vehicle lights.
Smart Images
Figure CN224534097U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of anti-sunlight focusing technology for vehicle lights, specifically, to an optical structure for preventing sunlight focusing based on in-mold injection molding process. Background Technology
[0002] Regarding automotive headlight modules, traditional halogen lamps pose a lower risk due to the high-temperature resistance of the filament and the fact that the lens cover is mostly made of simple polycarbonate (PC) material, making them less prone to sunlight focusing. However, in the era of LED and laser headlights, there is a risk of sunburn when the headlights are exposed to sunlight. The reasons for this include:
[0003] Lenses: especially condenser lenses and projection lenses, are designed to converge the light emitted by a light source into a parallel or specific light pattern. However, when sunlight enters from the opposite direction, these lenses will similarly focus the sunlight onto a certain point inside.
[0004] Reflector bowl: A parabolic or freeform reflector bowl is designed to reflect and focus light forward. When sunlight shines in from the front of the car, it reflects and focuses the sunlight to the vicinity of the reflector bowl.
[0005] The traditional solution involves disassembling the baffle around the headlight module and using a high-heat-resistant material in the sunlight-focusing area to absorb the focused sunlight, thereby ensuring the normal operation of the headlights. However, this conventional solution has the following problems:
[0006] 1. Increased raw material costs: The unit price of high-temperature resistant plastics is higher than that of ordinary plastics used to make car lights, which will further increase the price of car lights;
[0007] 2. To facilitate future maintenance of the area in the headlight that receives focused sunlight, multiple parts will be installed in that location. This allows for cost-effective repairs in case of structural damage. However, this increases the number of components and parts required when assembling the headlight.
[0008] 4. Additional costs introduced in the assembly process of the production line: When assembling multiple workpieces, more workstations need to be set up for assembly. At the same time, multiple parts are prone to dimensional errors during production, which can lead to differences in appearance quality after the parts are assembled, thus reducing the appearance assembly quality of the headlights.
[0009] 5. High heat-resistant materials are prone to oxidation and damage over long periods of time. Summary of the Invention
[0010] The purpose of this invention is to provide an optical structure for preventing sunlight from focusing based on in-mold injection molding, so as to solve the problems mentioned in the background art.
[0011] To address the aforementioned problems, this utility model provides an optical structure for preventing sunlight focusing based on in-mold injection molding, comprising a lamp assembly. One end of the lamp assembly has a lamp assembly baffle, which includes a stamped part and an injection-molded part. The stamped part and the injection-molded part are fixed together by in-mold injection molding. The injection-molded part includes a tapered ring, with an inner tapered ring fixed inside the tapered ring at its smaller opening end, and a sleeve fixed to the tapered ring at its larger opening end. The stamped part includes a light-blocking ring, which is disposed inside the inner tapered ring and has the same shape as the inner tapered ring. The light-blocking ring is used to receive sunlight refracted by the lamp assembly.
[0012] As a further improvement to this technical solution, the stamping part also includes a collar fixedly sleeved on the sleeve. Several connecting strips are fixedly arranged in a ring on the side of the collar near the light-blocking ring, and the other end of the connecting strips is fixed to the side wall of the light-blocking ring away from the sleeve.
[0013] As a further improvement to this technical solution, side grooves are provided on the outer side wall of the inclined cone ring and at the position corresponding to the connecting strip, and the connecting strip is set in the side groove.
[0014] As a further improvement to this technical solution, several card plates are symmetrically fixed on the light-blocking ring, and several slots corresponding to the positions of the card plates are opened on the side wall of the oblique conical ring away from the sleeve, and the card plates are inserted and fixed in the slots.
[0015] As a further improvement to this technical solution, the end of the inclined conical ring away from the sleeve is an inclined surface, and the sleeve is also inclined, so that the sleeve and the inclined conical ring are combined to form a shape that is wide on one side and narrow on the other side. When the lamp assembly baffle is installed on the lamp assembly, the distance from the inclined conical ring at the narrow position to the lamp assembly is greater than the distance from the inclined conical ring at the wide position to the lamp assembly.
[0016] As a further improvement to this technical solution, the lamp assembly includes a connecting ring, a protective sleeve is inserted and fixed to one side of the connecting ring, a connecting frame is fixed to the outer wall of the protective sleeve, a retaining ring is fixed to the side of the sleeve away from the oblique conical ring, and several plugs are fixed to the side of the retaining ring away from the sleeve, with one end of the plugs inserted and fixed to the connecting frame.
[0017] As a further improvement to this technical solution, a heat dissipation aluminum frame is fixedly installed on the side of the connecting ring away from the protective sleeve, and a lamp tube sleeve is fixedly installed on the side of the heat dissipation aluminum frame close to the protective sleeve. One end of the lamp tube sleeve passes through the connecting ring and the protective sleeve and is fixedly installed with a convex lens. The convex lens is located inside the light-blocking ring.
[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0019] 1. In this optical structure for preventing sunlight focusing based on in-mold injection molding, the integrally stamped part is injection molded in a mold, fixing the molded part and the stamped part together. This reduces the trouble of setting up multiple parts for the car headlight to solve the problem of sunlight focusing, reduces the trouble of part assembly and transportation, and reduces the number of steps for workers to install. At the same time, the lamp baffle obtained by injection molding can ensure consistent shape and improve the appearance. In addition, the metal stamped part can effectively block sunlight when it encounters focusing, avoiding the damage of the original high heat-resistant material after long-term use.
[0020] 2. In this optical structure for preventing sunlight from focusing, based on in-mold injection molding, one end of the oblique conical ring is tilted so that the side of the convex lens away from the light-blocking ring is closer to the outer side of the oblique conical ring. When sunlight shines on the convex lens, the convex lens refracts the light and focuses the sunlight onto the light-blocking ring. This setting can limit the position of sunlight focusing and prevent the focused sunlight from shining on other positions, thus ensuring the normal use of the device. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0022] Figure 2 This is a schematic diagram of the lamp assembly baffle structure of a utility model.
[0023] Figure 3 This is a top view schematic diagram of the lamp assembly baffle structure of the utility model;
[0024] Figure 4 This is one of the schematic diagrams of the injection molded part structure of the utility model;
[0025] Figure 5 This is the second schematic diagram of the injection molded part structure of the utility model;
[0026] Figure 6 This is a schematic diagram of the stamping structure of a utility model.
[0027] Figure 7 This is a schematic diagram of the exploded structure of a lamp assembly of a utility model.
[0028] The meanings of the labels in the diagram are as follows:
[0029] 1. Lamp assembly; 11. Lamp tube sleeve; 12. Convex lens; 13. Heat dissipation aluminum frame; 14. Connecting ring; 15. Protective sleeve; 16. Connecting bracket;
[0030] 2. Lamp assembly baffle; 21. Inclined cone ring; 211. Side slot; 22. Sleeve; 23. Retaining ring; 231. Connector; 24. Inner plate inclined ring; 241. Slot; 25. Light blocking ring; 251. Clamping plate; 26. Collar ring; 27. Connecting strip. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Example
[0033] Please see Figures 1-7 As shown, this embodiment provides an optical structure for preventing sunlight focusing based on in-mold injection molding, including a lamp assembly 1. The lamp assembly 1 includes a connecting ring 14, which is mounted on a vehicle lamp mounting bracket so that the connecting ring 14 can be positioned at the front of the vehicle. A protective sleeve 15 is inserted and fixed to one side of the connecting ring 14. A connecting bracket 16 is fixed to the outer wall of the protective sleeve 15. A heat dissipation aluminum bracket 13 is fixedly installed on the side of the connecting ring 14 away from the protective sleeve 15. A lamp tube sleeve 11 is fixedly installed on the side of the heat dissipation aluminum bracket 13 close to the protective sleeve 15. One end of the lamp tube sleeve 11 passes through the connecting ring 14 and the protective sleeve 15 and is fixedly mounted with a convex lens 12. The convex lens 12 is located on the outside of the protective sleeve 15. Electrical components such as lamp beads are disposed inside the lamp tube sleeve 11.
[0034] A lamp assembly baffle 2 is provided at one end of the lamp assembly 1. The lamp assembly baffle 2 includes a stamped part and an injection molded part. The stamped part is made of aluminum alloy and is integrally stamped. The injection molded part is made of molten plastic. The stamped part and the injection molded part are fixed together by in-mold injection molding. That is, the integrally stamped part is placed into the mold of the injection molded part in advance, and then the mold is closed and injection molding is performed, so that the stamped part and the injection molded part are tightly fixed together to form a complete structure. The stamped part receives the sunlight concentrated on the convex lens 12. The metal stamped part can effectively receive sunlight without being concentrated. The stamped metal parts are less expensive than those made of high-heat-resistant materials, thus reducing production costs. By fixing the stamped and injection-molded parts together through injection molding, the number of parts required to prevent damage from concentrated sunlight in the original headlights is reduced, simplifying installation. The lamp baffle 2, obtained through injection molding, ensures a consistent shape, improving the aesthetics. Furthermore, the stamped metal parts effectively block concentrated sunlight, preventing damage from prolonged use of the original high-heat-resistant materials.
[0035] The injection molded part includes a tapered ring 21. An inner tapered ring 24 is fixed inside the tapered ring 21 at its smaller end. The inner tapered ring 24 is fixed inside the tapered ring 21. A sleeve 22 is fixed to the tapered ring 21 at its larger end. A retaining ring 23 is fixed to the side of the sleeve 22 away from the tapered ring 21. Several connectors 231 are fixed to the side of the retaining ring 23 away from the sleeve 22. One end of each connector 231 is inserted and fixed to a connecting bracket 16. The connection between the connecting bracket 16 and the connectors 231 secures the lamp assembly baffle 2 and the lamp assembly 1. One end of the convex lens 12 is located inside the tapered ring 21. (Note: The last sentence appears to be incomplete and possibly refers to a reference design.) Figure 3 As shown, the end of the inclined cone ring 21 away from the sleeve 22 is inclined, and the side of the inclined cone ring 21 near the sleeve 22 is also inclined. The included angle between the two sides of the inclined cone ring 21 is less than 90 degrees. At the same time, the sleeve 22 is also inclined along the inclined side of the inclined cone ring 21, so that the sleeve 22 and the inclined cone ring 21 combine to form a shape that is wide on one side and narrow on the other. When the lamp baffle 2 is installed on the lamp assembly 1, the distance from the narrow position of the inclined cone ring 21 to the lamp assembly 1 is greater than the distance from the wide position of the inclined cone ring 21 to the lamp assembly 1. That is to say, when sunlight shines on the headlight, the sunlight is more likely to pass from the convex lens 12 to the wide position of the inclined cone ring 21. When the convex lens 12 refracts and focuses the sunlight, the focused sunlight is directed towards the narrow position of the inclined cone ring 21. Figure 3 Sunlight enters the convex lens 12 from the left side of the oblique conical ring 21, and is then refracted and focused by the convex lens 12 onto the right side of the oblique conical ring 21.
[0036] The sunlight refracted and focused by the convex lens 12 is blocked by the inner plate oblique ring 24. In this solution, the focused sunlight is received by a stamped part. It is precisely because the stamped part is made of metal that the high temperature of the focused sunlight is prevented from damaging the injection molded part. The stamped part includes a light-blocking ring 25. The convex lens 12 is set inside the light-blocking ring 25. The light-blocking ring 25 is set inside the inner plate oblique ring 24 and has the same shape as the inner plate oblique ring 24. The light-blocking ring 25 is used to receive the sunlight refracted by the lamp group 1.
[0037] When this device is in use, external sunlight shines into the convex lens 12, and then is refracted and focused onto the light-blocking ring 25. The metal light-blocking ring 25 will not be damaged by the focused sunlight. At the same time, the metal itself has thermal conductivity, which can quickly dissipate the heat and prevent the temperature of a certain part of the stamping from becoming too high.
[0038] Meanwhile, in order to further improve the installation stability between the light-blocking ring 25 and the inner plate inclined ring 24, the stamping part also includes a collar 26 fixedly sleeved on the sleeve 22. Several connecting strips 27 are fixedly arranged in a ring array on the side of the collar 26 near the light-blocking ring 25. The other end of the connecting strip 27 is fixed on the side wall of the light-blocking ring 25 away from the sleeve 22. Side grooves 211 are opened on the outer side wall of the inclined conical ring 21 at the positions corresponding to the connecting strips 27. The connecting strips 27 are set in the side grooves 211. The contact between the connecting strips 27 and the side grooves 211 can increase the contact area between the stamping part and the injection molded part, and improve the installation stability between the injection molded part and the stamping part.
[0039] To further improve the stability between the injection molded part and the stamped part, several clamping plates 251 are symmetrically fixed on the light-blocking ring 25. Several slots 241 corresponding to the positions of the clamping plates 251 are opened on the side wall of the inclined conical ring 21 away from the sleeve 22. The clamping plates 251 are inserted and fixed in the slots 241. When the injection molded part is being injection molded, the molten plastic melt comes into contact with the clamping plates 251 and solidifies, which can further improve the stability of the connection between the injection molded part and the stamped part, and ensure the fixing effect between the injection molded part and the stamped part.
[0040] In this solution, the stamped part, which is formed by stamping, is injection molded in a mold, thus fixing the injection molded part and the stamped part together. This reduces the trouble of setting up multiple parts for the car headlight to solve the problem of sunlight focusing, reduces the trouble of part assembly and transportation, and reduces the number of steps for workers to install. At the same time, the lamp baffle 2 obtained by injection molding can ensure that the shape is consistent, improving the appearance. In addition, the metal stamped part can effectively block sunlight when it encounters focused sunlight, avoiding the damage of the original high heat-resistant material after long-term use. By tilting one end of the inclined cone ring 21, the side of the convex lens 12 away from the light-blocking ring 25 is closer to the outer side of the inclined cone ring 21. When sunlight shines on the convex lens 12, the convex lens 12 refracts the light and focuses the sunlight on the light-blocking ring 25. This setting can limit the position of sunlight focusing and prevent the focused sunlight from shining on other positions, ensuring the normal use of this device.
[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An optical structure for preventing sunlight focusing based on in-mold injection molding, comprising a lamp assembly (1), wherein a lamp assembly baffle (2) is provided at one end of the lamp assembly (1), characterized in that: The lamp baffle (2) includes a stamped part and an injection molded part. The stamped part and the injection molded part are fixed together by in-mold injection molding. The injection molded part includes a conical ring (21). An inner plate conical ring (24) is fixed inside the conical ring (21) at the small end. A sleeve (22) is fixed at the conical ring (21) at the large end. The stamped part includes a light-blocking ring (25). The light-blocking ring (25) is set inside the inner plate conical ring (24) and has the same shape as the inner plate conical ring (24). The light-blocking ring (25) is used to receive the sunlight refracted by the lamp group (1).
2. The optical structure for preventing sunlight focusing based on in-mold injection molding process according to claim 1, characterized in that: The stamped part also includes a collar (26) fixedly sleeved on the sleeve (22). A number of connecting strips (27) are fixedly arranged in a ring on the side of the collar (26) near the light blocking ring (25). The other end of the connecting strips (27) is fixed on the side wall of the light blocking ring (25) away from the sleeve (22).
3. The optical structure for preventing sunlight focusing based on in-mold injection molding process according to claim 2, characterized in that: Side grooves (211) are provided on the outer wall of the inclined cone ring (21) and at the position corresponding to the connecting strip (27), and the connecting strip (27) is disposed in the side grooves (211).
4. The optical structure for preventing sunlight focusing based on in-mold injection molding process according to claim 1, characterized in that: The light-blocking ring (25) has several card plates (251) fixed symmetrically at the center. The oblique conical ring (21) has several slots (241) on the side wall away from the sleeve (22) that correspond to the positions of the card plates (251). The card plates (251) are inserted and fixed in the slots (241).
5. The optical structure for preventing sunlight focusing based on in-mold injection molding process according to claim 1, characterized in that: The end of the oblique conical ring (21) away from the sleeve (22) is an inclined surface, and the sleeve (22) is also inclined, so that the sleeve (22) and the oblique conical ring (21) are combined to form a shape that is wide on one side and narrow on the other side. When the lamp baffle (2) is installed on the lamp group (1), the distance from the oblique conical ring (21) at the narrow position to the lamp group (1) is greater than the distance from the oblique conical ring (21) at the wide position to the lamp group (1).
6. The optical structure for preventing sunlight focusing based on in-mold injection molding process according to claim 1, characterized in that: The lamp assembly (1) includes a connecting ring (14), a protective sleeve (15) is inserted and fixed on one side of the connecting ring (14), a connecting frame (16) is fixed on the outer side wall of the protective sleeve (15), a retaining ring (23) is fixed on the side of the sleeve (22) away from the oblique cone ring (21), and a plurality of plugs (231) are fixed on the side of the retaining ring (23) away from the sleeve (22), and one end of the plugs (231) is inserted and fixed on the connecting frame (16).
7. The optical structure for preventing sunlight focusing based on in-mold injection molding process according to claim 6, characterized in that: A heat dissipation aluminum frame (13) is fixedly installed on the side of the connecting ring (14) away from the protective sleeve (15). A lamp tube sleeve (11) is fixed on the side of the heat dissipation aluminum frame (13) close to the protective sleeve (15). One end of the lamp tube sleeve (11) passes through the connecting ring (14) and the protective sleeve (15) and is fixedly installed with a convex lens (12). The convex lens (12) is located inside the light blocking ring (25).